Specifications

lime production line
1.turkey projects
2.main equipment,vertical shaft kiln,rotary kiln
3.capacity,from 500T/d-5000T/d

Active Lime Production Line

Description of  Active Lime Production Line

 

 This  active lime production line is a complete line that includes vertical preheater, rotary kiln, grate cooler, air treatment system, raw material conveyor system, finished product conveyor system, raw coal grinding system, and so on.  central control system is employed to make concentrated operation management.

 

Process Flow of Active Lime Production Line

 

1. Raw Material Conveying:   The 20-40mm limestone on the stock ground is sent to storage silo by the B1000 belt conveyor with large inclination. In the storage silo, qualified limestone with granularity more than 10mm will be sent to the gravel silo, while limestone with particle size less than 10mm will be conveyed to the powder silo.

2. Limestone Calcining:   The limestone calcining system is mainly made up of 10.5×8.5m vertical preheater, 4.0×60m rotary kiln and vertical coolder whose output is 600t/d and heat consumption of 5.75GJ/t. Limestone inside the preheater is heated by high-temperature gases from rotary kiln to 600-800°C, at which temperature limestone can be partly decomposed. Then the limestone will be sent by 12 hydraulic push rods to the kiln end, where it will undergo high-temperature calcination before sent to the vertical cooler. The processed limestone will be cooled down by cold air to 65°C. Air from the vertical cooler enters into the rotary kiln as the second air to take part in calcining process.

3. Finished Product Conveying:   The final lime will be sent to the storage bin for final products by NE500 bucket elevator. After screening, qualified lime whose particle size is more than 5mm will be sent to storage for active lime, while powder lime whose size is less than 5mm will be sent to storage bin for powder.

4. Gas Treating:   High-temperature gases from rotary kiln will do heat exchange with limestone inside the preheater, and after that, the temperature of these gases will reduce to lower 280°C. Then these gases will be cooled down by multi-tube cooler to 200°C lower. Finally, they enter into the bag filer before discharged into the atmosphere

 

Description of Lime Rotary Kiln (Active Lime Calcining Equipment

 

 Active lime can be widely used in a wide range of industries, such as steel, alumina, magnesium, calcium carbide, papermaking field, etc. As an important auxiliary material, active lime can not only help to improve the quality and output of steel, but also reduce the consumption and costs as well as ensure stable operation of steel industry.

 

Technical Parameters of Lime Rotary Kiln

 

Specification (m)	Φ2.5×40	φ2.8x42	Φ3x46	Φ3.2x50	φ3.2x54	φ3.6x56	φ3.8x58	Φ4x60	Φ4.3x58	Φ4.3x64	Φ4.8x68
Effective volume (m3)	142	190	235	292	390	430	505	575	670	738	1005
Burning temperature (°C)	1350/1250	1350/1250	1350/1250	1350/1250	1350	1350	1350	1350	1350	1350	1350
Productivity (t/d)	150	200	250	300	350	400	500	600	750	800	1000